Silicone O-ring · AS568-139 size reference

O-Ring 55.25 × 2.62 mm · Silicone · 70A

  • ID55.25 mm2.175 in
  • CS2.62 mm0.103 in
  • MaterialSilicone
  • Hardness70 Shore A

OXXRING SKU OXX-OR-55P25-2P62-SILICONE-70A-P50

O-Ring 55.25 × 2.62 mm · Silicone · 70A
Representative image. Colour can differ by compound.
ID 55.25 mm CS 2.62 mm SECTION
Nominal dimensions. Drawing is proportional, not to scale.
PDF Technical drawingFront and section views with dimensions

Same size, other grades

Compare every grade at this size →
Available to order
$33.96for 50 pcs

$0.68 per piece

1 pack × 50 pcs = 50 pieces · $33.96

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  • Price is the total for the pack. Taxes and shipping are calculated at checkout.

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Standard items: returns per our Refund Policy. Custom items are made to order.

Specifications

Inside diameter (ID)55.25 mm · 2.175 in
Cross section (CS)2.62 mm · 0.103 in
Material familySilicone
Hardness70 Shore A
Size referenceAS568-139, BS1806-139
OXXRING SKUOXX-OR-55P25-2P62-SILICONE-70A-P50
OrderingBuy online
Check chemical compatibility for Silicone Check this size in a groove

Check this size for your application

Free engineering tools, already filled in with 55.25 × 2.62 mm Silicone.

Engineer ProRod, piston, face or dynamic seal: squeeze, extrusion and pressure for this exact ring Material selectorMedia, temperature and pressure to the right family Size cross-referenceThis size in AS568, JIS and BS terms CalculatorsWeight, cord length and stretch

Same size, other materials and hardness

Identical nominal ID × CS. Material and hardness change suitability; check the fluid and temperature before switching.

SizeMaterialSize referenceSmallest packOrderingAction
55.25 × 2.62 mm2.175 × 0.103 in NBR 60A AS568-139 $4.99 / 10 pcs $0.50 / pc Available to order Choose pack
55.25 × 2.62 mm2.175 × 0.103 in FKM 80A AS568-139 $12.92 / 10 pcs $1.29 / pc Available to order Choose pack
55.25 × 2.62 mm2.175 × 0.103 in EPDM 70A AS568-139 $4.99 / 10 pcs $0.50 / pc Available to order Choose pack
55.25 × 2.62 mm2.175 × 0.103 in FFKM 80A AS568-139 $179.76 / 2 pcs $89.88 / pc Available to order Choose pack

Silicone material notes

Usually a good starting point for

Ozone/weathering and salt-solution service; water service may be considered conditionally.

Review before use with

Review fuels, aromatic/chlorinated hydrocarbons, steam, acids, alkalis and silicone-fluid service.

Family-level screening, not an approval of a specific compound. Screen a chemical or ask for a material check.

Documents

Questions about this O-ring

How do I confirm this is the right size?

Measure the inside diameter and the cross section of the ring you are replacing, or read them from the drawing. This listing is 55.25 × 2.62 mm. For a used ring, measure in several places; wear and swelling change the dimensions. Measurement guide

How is the price calculated?

The price shown is the total for one pack. The per-piece price is shown beside it for comparison. Choose how many packs you need; taxes and shipping are calculated at checkout.

Can I order a quantity that is not in the pack list?

Yes. Order several packs, or request a quote for larger or scheduled quantities.

Is the size reference a certification?

No. A size reference such as AS568 or ISO 3601 describes nominal dimensions. It does not certify the compound or approve the part for a specific application.